Rohi Ghazali

Rohi Ghazali
Universiti Kebangsaan Malaysia | ukm · School of Diagnostic and Applied Health Sciences

About

113
Publications
34,175
Reads
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985
Citations
Citations since 2016
57 Research Items
697 Citations
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
2016201720182019202020212022020406080100120140
Additional affiliations
January 1999 - present
Universiti Kebangsaan Malaysia
Position
  • Professor (Associate)
Description
  • Also as Coordinator of Health Science Education Unit

Publications

Publications (113)
Article
Full-text available
Skin squamous cell carcinoma (SCC) is a type of non-melanoma skin cancer. Pterostilbene is a natural compound proven to exhibit various pharmacological properties, including chemo-preventive effects. This study aimed to explore the chemo-preventive effect of oral pterostilbene during initiation, promotion or continuous on multistage skin SCC mouse...
Article
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The study evaluated the antioxidant capacity of hexane extract of Canarium odontophyllum Miq. leaf; its fatty acids and terpenoids content; and cytotoxic effects on UVB-induced human keratinocytes (HaCaT). FRAP assay was used to determine antioxidant capacity. GC-MS analysis to identify the fatty acids and terpenoids’ in the hexane extract of Canar...
Article
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The high incidence and mortality of skin cancer along with the development of chemotherapy resistance have urged researchers to look into alternative strategies to combat cancer. Chemoprevention is one of the well-researched strategies using natural products. Canarium odontophyllum Miq. (dabai) is a local seasonal fruit that is mainly found in Sara...
Article
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The increase in the number of Tahfiz schools in Malaysia indicates a high demand from the community for Tahfiz education. Tahfiz schools provide a Quran memorization syllabus as the main part of the curriculum at the primary and secondary levels. There is no holistic module that combines learning and health for Tahfiz students in Malaysia. Huffaz P...
Article
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Canarium odontophyllum Miq., renowned locally as “dabai,” is an endemic plant in Sarawak, Malaysia. Most people, especially in rural areas, consume this plant to maintain their health. A few medicinal studies have investigated C. odontophyllum Miq.’s biological properties to substantiate its use as nutraceuticals and health supplements. Crude extra...
Article
The mentor-mentee programme was started in Universiti Kebangsaan Malaysia (UKM) in the early 90's and involved monitoring students (mentee) academic performances with the lecturer (mentor). The mentor-mentee programme in the Faculty of Health Sciences (FSK), UKM, needs improvement to stay relevant to students. Therefore, some modifications were mad...
Article
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Pterostilbene has dermal medicinal benefits such as anti-inflammatory, antioxidative effects and photoprotective properties against UVB radiation. The purpose of this study was to evaluate the dermal toxicity of pterostilbene via skin irritation and sensitisation. A skin irritation test was done according to the Organization Economic Co-operation a...
Article
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A bs t ra c t Background: The process of memorizing various reading materials enhances the brain capacity to process, store, and assemble memories and increases the intelligence quotient (IQ) level. However, the connection between the memorization of Quran and the enhancement of memory level is not fully understood. Hence, a cross-sectional study w...
Article
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Pterostilbene is a potent antioxidant and anti-inflammatory agent. However, its chemopreventive effects via anti-tyrosinase activity and inhibitory effects on melanin content have not been reported previously. Hence, this study aimed to investigate the anti-melanogenic activity of pterostilbene on UVB-irradiated B164A5 mouse melanoma cells. The eff...
Article
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The belief that natural products are inherently safe is a primary reason for consumers to choose traditional medicines and herbal supplements for health maintenance and disease prevention. Unfortunately, some natural products on the market have been found to contain toxic compounds, such as heavy metals and microbes, as well as banned ingredients s...
Article
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Prolonged nicotine exposure escalates the onset and development of cardiovascular diseases in both active and passive smokers via cardiac injury. Pterostilbene, a resveratrol derivative, has been shown to exhibit high anti-inflammatory, antioxidant and antitumor properties. Nevertheless, its role as a cardioprotective agent in a nicotine-induced ra...
Article
Objective: To investigate the effects of Quran memorization on psychological and health well-being, particularly on intelligence quotient (IQ), quality of life (QOL) and hormone levels in students of selected secondary schools in Selangor, Malaysia. Materials and Methods:A cross-sectional study was conducted on 159 Quran memorizers from five school...
Article
Extended dermal exposure of ultraviolet B (UVB) can induce erythema, hyperpigmentation, epidermal hyperplasia and cancer. Natural active compound such as pterostilbene (PS) is a potential UV-protecting agent as it has broad biological activities. This study aimed to evaluate the photoprotective effect of pterostilbene on ultraviolet-B-induced BALB/...
Article
Full-text available
Background: Traditional cooling rice powder (bedak sejuk) is a fermented rice-based cosmetic that is applied topically on one's skin, as an overnight facial mask. According to user testimonies, bedak sejuk beautifies and whitens skin, whereby these benefits could be utilised as a potential melanoma chemopreventive agent. Objective: Hence, this s...
Article
Background: Lung cancer is the leading cause of cancer-related deaths, and squamous cell carcinoma (SCC) is one of the most common types of lung cancer. Chemoprevention of lung cancer has gained increasing popularity as an alternative to treatment in reducing the burden of lung cancer. Pterostilbene (PS) may be developed as a chemopreventive agent...
Article
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Sodium hypochlorite (NaOCl), an effective endodontic irrigant against Enterococcus faecalis (EF), is harmful to periapical tissues. Natural pineapple-orange eco-enzymes (M-EE) and papaya eco-enzyme (P-EE) could be potential alternatives. This study aimed to assess the antimicrobial efficacy of M-EE and P-EE at different concentrations and fermentat...
Article
Significance: Total protein concentration (TPC) and tumor necrosis factor α (TNF-α) concentration in tears are correlated with severity of retinopathy. However, minimal data are available in the literature for investigating tear TPC and TNF-α concentrations in Asian individuals with different severity of nonproliferative diabetic retinopathy (NPDR...
Conference Paper
Full-text available
ABSTRAK Hafazan Al-Quran merupakan salah satu amalan keagamaan dalam kalangan umat Islam yang dilaporkan dapat memberi impak positif di dalam diri seseorang. Namun pembuktian secara saintifik berkaitan impak hafazan Al-Quran masih belum menyeluruh. Oleh itu, kajian ini bertujuan untuk mengenalpasti impak hafazan Al-Quran terhadap kesejahteraan fizi...
Article
Dietary antioxidant supplements such as L-glutathione have gained considerable attention in dermatology and cosmeceutical fields. L-Glutathione possesses antiaging, antimelanogenic, antioxidant, and anticancer properties. This study aimed to investigate the inhibitory effects of L-glutathione on melanogenesis activity and oxidative stress in UVB-ir...
Article
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Zingiber zerumbet is widely used as therapeutic agent in traditional medicine and is reported to exert antioxidant activities. This study evaluated in vitro antioxidant potential of Z. zerumbet rhizome ethyl acetate extract on hydrogen peroxide (H 2 O 2 )-induced red blood cells (RBCs) damage; by measuring percentage of haemolysis, oxidative damage...
Article
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INTRODUCTION: Subclinical changes that occur in the heart at an early age may provide valuable information to outline prevention strategies for cardiovascular diseases. Heart rate variability (HRV) reflects regulation of autonomic balance, heart, and vascular tone, which are the determinants of blood pressure. Therefore, this study aimed to determi...
Article
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Among all types of human cancers, lung cancer is one of the most common and has the highest mortality rate. Two major groups of lung cancer based on histological features are non-small cell lung cancers (NSCLCs) and small cell lung cancers (SCLCs). NSCLCs are further subdivided into few subtypes such as adenocarcinoma(AD), squamous cell carcinoma (...
Article
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Commercial sunscreens contain cosmetic preservatives which could exert phototoxic effect when exposed to sunlight. Natural sources, such as resveratrol, have gain attention in the cosmetic world as it has higher antioxidant capacity than vitamins C and E. Resveratrol also possesses strong anti-inflammatory, anti-cancer, and anti-aging properties. I...
Article
Bacterial adhesion to host cells is the most important probiotic character. However, the adhesion of probiotic should not affect the viability of the host cells. In this study, Lactobacillus plantarum strain L8, Lactobacillus plantarum strain L20 and Lactobacillus pentosus strain S1 were tested for their cytotoxic effects through MTT assay and thei...
Article
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Background: Zingiber zerumbet rhizome ethyl acetate extract (ZZRE) has the potential to be developed as a wound-healing agent with its profound anti-inflammatory property. Objective: This study was conducted to evaluate the wound healing effects of 5% ZZRE on open wound in rats. Materials and Methods: Wistar rats (n = 90) were divided into three gr...
Article
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Ultraviolet radiation (UVR) from sunlight is an environmental human carcinogen. Skin exposure to UVR would increase the oxidative stress, deoxyribonucleic acid (DNA) damage, melanogenesis and photocarcinogenesis. Therefore, development of photoprotective agent is necessary in order to reduce the cutaneous toxicity. The use natural active compounds...
Article
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Lactic acid bacterium isolated from fermented durian (tempoyak) was investigated for its potentials as a probiotic strain. Bacterial tolerance toward gastrointestinal environment, adhesion, and cytotoxic activity in human colon adenocarcinoma cell line HT‐29 was evaluated. 16S rRNA sequencing identified the lactic acid bacterium as Lactobacillus pl...
Article
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Mutagenic and antimutagenic activities of lactic acid bacteria (LAB) Lactobacillus plantarum isolated from the local fermented durian (tempoyak) was determined by Ames test (Salmonella/microsome mutagenicity assay). Our study also involved pre-incubation assay against Salmonella typhimurium TA 98 and TA 100 bacterial strain in the presence and abse...
Article
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Canarium odontophyllum or locally known as Dabai in Sarawak is a fruit largely consumed by the locals. Based on previous studies, the plant possessed various biological activities, such as antimicrobial, antioxidant, antifungal and anticancer. Our aim was to investigate the mutagenicity and antimutagenicity of C. odontophyllum acetone leaves extrac...
Article
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Exposure to pesticides and fertilizers lowers the level of trace elements in the human body for several reasons. This study aimed to investigate the effect of pesticide exposure to the levels of trace elements of farmers in Bachok and Tumpat, Kelantan, Malaysia. This cross sectional study involved 89 farmers. Demographic data and information on the...
Article
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Exposure to organophosphate pesticide including fenitrothion (FNT) has led to many adverse effects on human health. However, a potent antioxidant like palm oil tocotrienol-rich fraction (TRF) can reduce oxidative damage in various pathological conditions, could also reduce the adverse effects by FNT. The aim of this study was to evaluate the effect...
Article
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The antibacterial activity of pterostilbene in combination with gentamicin against six strains of Gram-positive and Gram-negative bacteria were investigated. The minimum inhibitory concentration and minimum bactericidal concentration of pterostilbene were determined using microdilution technique whereas the synergistic antibacterial activities of p...
Article
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Background and objectives: Nutrition and physical activity interventions is beneficial in reversing obesity. However far too little attention has been paid to the effect of these interventions on breast tissues. Thus, the aim of this study was to explore the effect of a home-based dietary and physical activity intervention (the Her Shape Program)...
Article
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Quassia borneensis has been traditionally used as antihypertensive agent without any scientific literature on its mechanism of action. The objective of this study was to evaluate the antiinflammatory, antioxidant and antiproliferation properties of Q. borneensis extracts. The hexane, chloroform and aqueous extracts of root and bark of Q. borneensis...
Article
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Background: Pesticide exposure possesses risk of genotoxicity to humans, particularly farmers. Despite accumulating evidences linking genotoxicity to pesticide exposure, epidemiological studies to address pesticide toxicity in occupationally exposed farmers in Malaysia remain underreported. Thus, this study was aimed to determine the presence of n...
Article
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The essential oil (EO) of Piper aduncum Linnaeus, known as ‘sireh lada’ to locals Malaysian, has the potential to be used as an alternative to synthetic insect repellents such as N,N-diethyl-meta-toluamide. However, the EO's efficacy as a repellent decreases after application due to the high volatility of its active ingredients. A number of studies...
Article
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Pterostilbene is biologically classified as a phytoalexin, which is part of the plant's defence system in response to pathogen infection. The present study is to identify the type of interaction and post-antibiotic effect time of pterostilbene in combination with linezolid against methicillin-resistant Staphylococcus aureus American Type Culture Co...
Article
Chalcone derivatives are known for their numerous biological activities which include the interference of microtubule dynamics instability and are good candidates as an antimitotic agent that can be beneficial in the treatment of cancer. In the work described here, two series of chalcone derivatives including two newly synthesised derivatives were...
Article
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Methicillin-resistant Staphylococcus aureus (MRSA) is a deadly pathogen that initially was limited to hospital and healthcare facilities but has gradually became a growing problem in healthy children and adults. Pterostilbene belongs to the phenylpropanoid phytoalexin which is involved in plant response to various pathogen and herbivores attack. Th...
Article
Full-text available
Methicillin-resistant Staphylococcus aureus (MRSA) is a deadly pathogen that initially was limited to hospital and healthcare facilities but has gradually became a growing problem in healthy children and adults. Pterostilbene belongs to the phenylpropanoid phytoalexin which is involved in plant response to various pathogen and herbivores attack. Th...
Article
Full-text available
Purpose: To investigate the relationship between tear ferning patterns (TFP) and non-invasive tear break-up time (NIBUT) in normal Asian subjects. Methods: One hundred and forty-five adults with no ocular surface disorders were recruited. TFP and NIBUT were determined. Tears were collected using a capillary tube and allowed to air dry at room te...